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Altera_Forum
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13 years ago

rx_clkout - route to which output pin

I'm planning to use the ALT_GX module in an Arria II GX FPGA like indicated here: http://www.altera.com/literature/an/an610.pdf Page 7, figure 4. The question I have is which output pin sho...
Altera_Forum's avatar
Altera_Forum
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13 years ago

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what is the suggested pin type to use?

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I would recommend the PLL_OUT pin, along with whatever resistors are needed to make the pseudo-differential signal compatible with the TI clock chip. Since the signal is a clock, you can AC-couple, so you'll just need to check that the amplitude of the output does not exceed the input to the TI jitter cleaner.

File a Service Request with TI and ask which pins they used, or recommend. Please post their response here, in case others have this same question.

Cheers,

Dave